Pile-driving mechanism



July 1, 1930.

Filed Jan. so, 1928 s Sheets- Shegt 1 INVENTQRS WARRENEDENIS E ALBERT.W.THWING W. E. DENISE ET AL FILE DRIVING- MECHANISM July 1, 1930.

Filed Jan. 50, 1928 3 Sheets-Sheet 2 55 m 3 wu n 3 2 N 3 3 W W G 1%. m m 5 I mu n B SWN. {J r 0 0 f m u d -....H. a Q 9 5 2 -5 ATTORNEYS July 1, 17930.

w. E. DENISEIET AL FILE DRIVING MECHANISM Filed Jan. 30, 1928 3 Sheets-Sheet 3 iri| ll -31 FIGS INVENTORS WARREYLEDENISE ..ALBERT.W.THWING I wizrmn fm ATTOR Patented July 1, 1930 umreofsrres p I f1 WARREN E. DENISE AND ALBERT W. TI-IWING, OF MONTREAL, QUEBEC, CANADA FILE-DRIVING MECHANISM Application filed January 30, 1928. Serial No. 250,528.

This invention relates to' new and useful improvements in apparatus for driving concrete piles and the like. The object of the invention is to provide a self-contained selfpropelled pile driving unit which will be inexpensive to operate, and easy to manipulate and set up in congested areas.

Another object is to provide a: pile driving unit which will require theminimum o amount of headroom.

v A further object is to provide a pile driving unit suitable for driving sectional piles, forms for concrete rpiles, or sectional form driving cores.

According to our invention we provide a mechanically operated-pile driving unit having a feed magazine for storing sectional piles or'form driving 'cores. The pile driving hammer is positioned at one end of the unit and means are provided for conveying the cores of the pile sections from the magazine to a position beneath the hammer. The use of -sectional cores or piles obviates the necessity for the high hammer guide or mast now commonly in use. Themagazine may be either attached to or made integral with the" machine which is self-propelled and all parts necessary for the operation'of the machine can be transported as a unit. V t

In the drawingswhich illustrate our invent1on:-' p V V Figure 1 is aside elevation of our improved pile driving unit.

Figure 2 is an end elevationof the unit shown in Figure 1 withthe mast and hammer shown in position.

Figure 3' is a side elevation of one type of form driving core which may be used.

Figure & is a plan view of the core shown in Figure 3. v j

Figure 5f is a part sectional side elevation showing the connection between two of the cores a'nd the manner of supporting same.

' Figure 6 is aview of; a form encased concrete pile, the form of which is driven into position by our improved cores.

Figure T is a sectional elevation of a (301- la sible pile form. e Figures 8 and 9 are part side sectional elevations showing a plurality of cores indriving relation and within a telescopic form for piles.

Referring more particularly to the drawings ll designates the, frame or bed of the machine which is mounted on power driven endless travelling belts or treads 12; Mounted above the frame is the superstructure 13 which supports the hammer operating mechanism not shown. The housing frame 14 forthe mechanism extends towards 69 the front of the machine, and secured tosaid framing by any suitable means is the hammer guide 15. The hammer 15 is slidably mounted in the guide in the usualmanner. The fore part of the frame forms a magazine 6 17 for a plurality of cores-16, one of which is shownin detail in Figures 3 and 4. Cores are shown, but it willvbe readily understood that sectional precast piles of any of the well known types may be stored in the m'agazine. The top boom 18 of the frame forms 'a runway for a lifting trolley 19 or such like conveying means movable in the lon 'itudinal direction of the frame. -The trolley is F providedwith a hoisting -drum 20 rotated by anyfsuitable'means to hoist or lower a grapple'2lsuspended therefrom by means of a hoisting rope 22'. Thedriving cores are preferably made as shown in Figures 3 and 4. The cores-are provided with the top and b'ottom discs 23 and 24 joined together by means of a plurality of barsf25. The top disc is preferably provided with a recess 26 to receive the driving block 27 shown in dotted lines. A reinforcing disc 28 is provided intermediate the ends of the cores and is secured to the bars '25 to prevent buckling of same. The core tapers from top to bottom and the bottom casting or disc is provided with a plurality of tapered projections 29, which fit into correspondingly spaced recesses 30 formed inthe top of the adjacent disc of the core immediately below it. There are a plurality'of these cores mounted in the N magazine and they are soarranged that when fitted together, they form a long tapering mast. Slots 31 are formed in each of the cores near the top thereof to receive the inwardly projecting hooks 32 of the latches 33 hingedly attached to the bottom of each km core. S aces 34 are left between each of the bars 25 hr the pur ose hereinafter described. The cores are use for driving the collapsible steel casing or form 35 which is usually employed in making cast in place concrete piles. These ile forms consist of a plurality of nested tu 36 as shown in Figure 7, which when drawn out form a tapered tube projecting downwardly into the ground and adapted to be filled with concrete, as shhwn in Figure 6. The adjacent edges of each tube in their extended form are in frictional contact with one another. One end of one of the forms is preferably made with a rounded or sharpened end for piercing the In the drawing we have shown one typeof magazine with lifting and conveymechanism, but it will be readily under stood that any other type of mechanism and magazine which is attached to or formed integral with the pile driving mechanism ma be used.

operation the magazine is filled with pile form driving cores, or the like, and the 16 driver is moved into osition. A collz psible pile form is placed neath the hammer. The hammer is raised to the required height and the core with the driving end is M in the centre of the collapsed form. pile hammer is raised and tripped in the usual manner and, in drop ing, comes inoontaotwith the wooden bloc placed on the top of said core and positioned in the formed in the top thereof. The falling hammer forces the central section into the and a distance almost equal to the I of the section of the core. The hammer iathen raised until the second smallest section of the core is lifted from the magaaine'and is fitted 'onto'the top of the first mentioned core-and, by raising and tripping the hammer, the form is driven down a furthandistance equal to the length of the secenflsection. A third section is added into theflaecond section and driven downwardly in'tlle same manner. The cores extend the fem in the manner shown in Figure 6. The cores? are tapered and frictionally engage withwthe walls of the form in their extended position. The cores are then withdrawn in thefollowing manner :The grapple is low seed and the hooks are placed in the slots in the-side of the core. The core is then pulled. To allow for a certain amount of free upland movement of the sections, the hooks 82 are fitted into slots and are normally spaced from the underside of the top disc of the core below. In raising the topmost section, ,itis moved a predetermined distance before the hooks are brought into contact with the disc immediately below it. The sections are thus raised and when withdrawn 0. equal to the length of one section. a bar 40 is placed through the slots 34 and on suitable supports. The bar contacts with a downwardly projecting piece 41 which holds the cores from dropping back into the form. Any other type of core supporting mechanism may be employed. The piece 41 also allows the hooks to be withdrawn so that the up ermost section may be released and carrie by the transporting mechanism to the ma zine.

The device is very simple in operation and provides an easy method of making concrete piles of the cast in place type as the form is filled with concrete. The casing is left in the ground until destroyed by corrosion. By providing sectional cores and collapsible forms, it will be seen that the height of the hammer guide is reduced to a minimum. The provision of a magazine provides a selfcontained, self-transported unit which facilitates the erection and placing of the piles in position, within the minimum amount of time and with the least expenditure of labour.

Having thus described our invention, what we claim is I 1. In a pile drivingunit, a pile driving hammer and guide therefor, a magazine in proximity to the guide for storing pile form driving cores and the like, and means for transporting and placing the cores in a po sition beneath the hammer.

2. In a pile driving unit, a driving hammer slidably mounted in a vertically disposed guide, a storage magazine extending outwardly from the guide. and a hoistin unit for lifting and transporting core sections stored in the magazine to and from a position beneath the hammer.

3. In a pile driving unit, a pile driving hammer movable vertically in a guide, a magazine secured to and extending outwardly from the guide. a runway permanently positioned above the magazine, and a hoisting and transporting unit on they runway for placing the core sections in the magazine in position below the hammer.

4. In a pile driving unit, a piledriving hammer movable vertically in a guide, a magazine secured to the guide and extending outwardly therefrom. hoisting means permanently positioned above the magazine and adapted to lift and transport core sections between the hammer and the magazine, and means for moving the magazine hammer and guide as a unit.

I 5. In a pile driving unit, a piledriving I;

hammer movable vertically in a guide, means for raising the hammer in said guide, a magazine positioned between the hammer raising means and the guide and a hoisting unit mounted above the magazine and adapted to lift and transport core sections between the hammer and the magazine.

6; In a pile driving unit, a pile driving hammer movable vertically in a guide socured to a superstructure, hammer raising means on the superstructure, a magazine between the guide and the hammer raising means, means positioned above the magazine for lifting and transporting core sections between the magazine and the hammer, and means for moving the superstructure.

7 In a pile driving unit, a pile driving hammer, a guide therefor, secured to one end of a superstructure, a hammer raising means at the other end of the superstructure, a storage magazine between the hammer raising means and the guide, framing extending above the superstructure and adapted to support a device for lifting and transporting core sections between the magazine and the guide, a bed frame below the superstructure, and meansfor transporting the bed frame and superstructure as a unit.

In witness whereof, we have hereunto set our hands.

WARREN E. DENISE. ALBERT W. THWING. 

